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Rattiand McWaterscreated their text from years of combined lecture notes and firsthand experience with students, resulting in a strong preparation for calculus. An emphasis on concept development, real-life applications, extensive exercises encourage deep understanding for students. Precalculus: Essentials'table of contents is based on learning objectives and condensed to cover only the essential topics needed to be successful in calculus. This text offers a fast pace and includes more rigorous topics ideal for students heading into calculus.

J.S.Ratti has been teaching mathematics at all levels for over 35 years. He is currently a full professor of mathematics and director of the Center for Mathematical Services at the University of South Florida. Professor Ratti is the author of numerous research papers in analysis, graph theory, and probability. He has won several awards for excellence in undergraduate teaching at University of South Florida and known as the coauthor of a successful finite mathematics textbook.

Marcus McWaters is currently the chair of the Mathematics Department at the University of South Florida, a position he has held for the last eleven years. Since receiving his PhD in mathematics from the University of Florida, he has taught all levels of undergraduate and graduate courses, with class sizes ranging from 3 to 250. As chair, he has worked intensively to structure a course delivery system for lower level courses that would improve the low retention rate these courses experience across the country. When not involved with mathematics or administrative activity, he enjoys playing racquetball, spending time with his two daughters, and traveling the world with his wife.